The point is not what Web 2.0 offers today, it's what Web 2.0 offers next year, and the year after. Whether you see it or not, the tide has turned.

Evolution:

-Mainframes as the computing platform (IBM)

--- PCs as the computing platform (Apple)

------- the OS as the computing platform (MS Windows) (Where Apple missed the boat by only offering their OS on proprietary hardware)

------------- the Internet as the computing platform (Google) (where MS will probably miss the boat)